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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 7 |
| 5 | 10 |
| 6 | 20 |
| 7 | 24 |
| 8 | 45 |
| 9 | 61 |
| 10 | 103 |
| 11 | 140 |
| 12 | 246 |
| 13 | 325 |
| 14 | 517 |
| 15 | 728 |
| 16 | 1086 |
| 17 | 1472 |
| 18 | 2184 |
| 19 | 2918 |
| 20 | 4197 |
| 21 | 5638 |
| 22 | 7875 |
| 23 | 10497 |
| 24 | 14625 |
| 25 | 19272 |
| 26 | 26354 |
| 27 | 34804 |
| 28 | 46992 |
| 29 | 61490 |
| 30 | 82471 |
| 31 | 107163 |
| 32 | 142128 |
| 33 | 184141 |
| 34 | 241701 |
| 35 | 311282 |
| 36 | 406164 |
| 37 | 519755 |
| 38 | 672726 |
| 39 | 858110 |
| 40 | 1102872 |
[1,0,1,3,7,10,20,24,45,61,103,140,246,325,517,728, 1086,1472,2184,2918,4197,5638,7875,10497,14625, 19272,26354,34804,46992,61490,82471,107163,142128, 184141,241701,311282,406164,519755,672726,858110, 1102872] |